The permanent marker is great for those situations when you need to mark, write or draw at school, office and factory. This marker uses great quality tip that can writing smoothly and does not fray over time. Our permanent marker ink dries quickly when used but won’t dry out if you forget the cap. Leave the cap off for up to half an hour and you will still be able to pick the marker back up and keep writing. The permanent ink is wear and water resistant and is perfect for any use. These markers work with multiple surfaces including paper, cardboard, metal, PVC, concrete, plastic and ceramic. Write on sports equipment, make signs for yard sales, mark boxes and more. Bullet tip markers are great everywhere from classrooms and offices to warehouses and manufacturing facilities. There are three color markers(Red,Blue,Black) in each individual package, which are suitable for various writing requirements. KEYI permanent markers are also low-odor and nontoxic so that they can be safe in classrooms as well as in laboratories. The ink is  conforms to ASTM-D4236, EN-71, and MSDS.